A permanent magnet ferrite pre-burning material preparation device

Abstract

The utility model belongs to preparation device technical field especially relates to a kind of permanent magnet ferrite preburning material preparation device, including heating box, rotary cylinder, suction pump and processing box, the processing box top is connected with feed bin, the feed bin bottom is fixedly connected with feed pipe, and feed pipe extends to processing box inside, the processing box top is connected with exhaust pipe, the exhaust pipe is connected in the fixed ring inside right side of processing box, the heating box inner wall is fixedly connected with heating pipe, the heating box and processing box mutually close side fixedly connected with fixed ring, annular groove is set up in the fixed ring surface.This permanent magnet ferrite preburning material preparation device, motor drive gear transmission drives rotary cylinder stable rotation, cooperation rotary cylinder in oblique staggered baffle to preburning material stirring flow, prolongs preburning material residence time, while heating box inner wall helical distribution heating pipe forms uniform temperature field, makes preburning material and hot air fully contact.

Description

Technical Field

[0001] This utility model relates to the field of preparation device technology, specifically a preparation device for permanent magnet ferrite pre-sintered material. Background Technology

[0002] With the continuous development of society and economy, there is a huge demand for new wear-resistant composite magnetic materials used in basic building materials. Permanent magnet ferrite is an oxide with subferromagnetism, which has good magnetic properties, outstanding cost performance, and is widely used in water pumps, automobiles and micro motors.

[0003] However, in the existing equipment, the pre-burned material needs to be thoroughly dried and oxidized in order to improve the production quality of permanent magnet ferrite. The drying and oxidation effects of traditional preparation equipment are not ideal, resulting in poor production quality.

[0004] To address these issues, we propose a device for preparing pre-sintered permanent magnet ferrite materials. Utility Model Content

[0005] The purpose of this invention is to provide a device for preparing pre-calcined permanent magnet ferrite materials, so as to solve the problem that the traditional devices mentioned in the background art have unsatisfactory effects on the drying and oxidation treatment of pre-calcined materials.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a permanent magnet ferrite pre-sintering material preparation device, comprising a heating box, a rotating cylinder, an air pump, and a processing box. The top of the processing box is connected to a feeding hopper, and the bottom of the feeding hopper is fixedly connected to a feeding pipe that extends into the interior of the processing box. The top of the processing box is connected to an exhaust pipe, which is connected to a fixed ring on the right side of the processing box. A heating pipe is fixedly connected to the inner wall of the heating box. A fixed ring is fixedly connected to the side of the heating box and the processing box that are close to each other. An annular groove is formed on the surface of the fixed ring. A snap-fit ​​ring is fixedly connected to the outer side of the rotating cylinder, and the snap-fit ​​ring is rotatably snapped into the annular groove. A filter element is provided at the connection between the heating box and the fixed ring.

[0007] Preferably, a baffle plate is fixedly connected inside the rotating drum, a motor is fixedly connected to the bottom of the heating box, a rotating shaft is fixedly connected to the output end of the motor, a small gear is fixedly connected to the end of the rotating shaft away from the motor, and a large gear is fixedly connected to the outside of the rotating drum, with the small gear meshing with the large gear. The motor drives the small gear and the large gear to mesh and transmit power through the rotating shaft, which can stably drive the rotating drum to rotate within the annular groove of the fixed ring, providing power for the pre-burned material processing; the baffle plate inside the rotating drum can move synchronously with the rotating drum, playing a stirring role for the pre-burned material and preventing the pre-burned material from accumulating in a localized area of ​​the rotating drum. At the same time, the gear transmission structure has high transmission efficiency and strong stability, and can accurately control the rotation speed of the rotating drum, ensuring that the pre-burned material is in full contact with the hot air and improving the uniformity of drying and oxidation.

[0008] Preferably, the bottom of the fixing ring on the left side of the heating box is connected to a discharge pipe, and a valve is installed on the discharge pipe. The discharge pipe provides a discharge channel for the pre-burned material after processing, and the valve can flexibly control the timing and speed of discharge to avoid premature discharge of the pre-burned material before it has been dried and oxidized, or leakage or blockage during the discharge process.

[0009] Preferably, the heating tubes are spirally distributed on the inner wall of the heating chamber, and the heating tubes do not contact the rotating cylinder. The spirally distributed heating tubes can evenly cover the inner wall of the heating chamber, and the released heat can form a stable and uniform temperature field in the heating chamber, avoiding local overheating or insufficient temperature that would lead to differences in the drying and oxidation effect of the pre-burned material.

[0010] Preferably, the baffles are arranged in an inclined and staggered pattern inside the rotating drum, and the baffles are fixedly connected to the inner wall of the rotating drum. The inclined and staggered baffles can prolong the residence time of the pre-burned material in the rotating drum, allowing the pre-burned material to have more time to contact with hot air, thereby improving the drying and oxidation effect. At the same time, the staggered baffles can guide and disperse the pre-burned material, breaking up the agglomeration state of the pre-burned material and ensuring that each particle of pre-burned material can be heated evenly, further ensuring the consistency of the quality of the pre-burned material after treatment, and avoiding the impact of insufficient local treatment on the quality of subsequent permanent magnet ferrite production.

[0011] Preferably, the filter element is made of high-temperature resistant ceramic filter material, and the filter element is detachable and installable. The high-temperature resistant ceramic material can adapt to the high-temperature environment inside the heating chamber, effectively filtering the air delivered by the air pump. After heating, the air adsorbs impurities in the air. The detachable design facilitates regular cleaning or replacement of the filter element, avoiding clogging due to long-term use and reducing the difficulty of equipment maintenance, ensuring that the filter element continues to function stably.

[0012] Preferably, both the annular groove and the snap-fit ​​ring have a T-shaped cross-section, and the fit clearance between them is 0.1-0.3mm. The T-shaped annular groove and snap-fit ​​ring fit together to provide axial positioning for the rotating cylinder, preventing vertical displacement during rotation and ensuring the stability of the rotating cylinder's operation. The small fit clearance of 0.1-0.3mm reduces the frictional resistance between the rotating cylinder and the fixed ring during rotation, ensuring smooth rotation of the rotating cylinder, and effectively prevents pre-burned powder from leaking out of the gap, avoiding raw material waste and internal equipment contamination, and improving the equipment's sealing performance and operational reliability.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The permanent magnet ferrite pre-sintering material preparation device uses a motor-driven gear transmission to drive a rotating drum to rotate stably. The inclined and staggered baffles inside the rotating drum stir and guide the pre-sintering material, extending the residence time of the pre-sintering material. At the same time, the spirally distributed heating tubes on the inner wall of the heating box form a uniform temperature field, allowing the pre-sintering material to fully contact the hot air.

[0014] 2. In this permanent magnet ferrite pre-sintering material preparation device, the T-shaped annular groove and the snap ring cooperate to axially limit the rotating cylinder and prevent it from moving up and down during rotation. The tiny gap of 0.1-0.3mm between the two reduces friction to ensure smooth rotation and prevents the pre-sintered material powder from leaking out. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall front view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the heating box of this utility model; Figure 3 This is a schematic diagram of the overall rear structure of this utility model; Figure 4 This is a schematic diagram of the rotating cylinder and fixed ring of this utility model.

[0016] In the diagram: 1 Heating box, 101 Heating tube, 102 Filter element, 2 Suction pump, 3 Processing box, 4 Feed hopper, 401 Feed pipe, 5 Exhaust pipe, 6 Fixing ring, 601 Annular groove, 7 Rotating cylinder, 701 Baffle, 702 Snap ring, 801 Large gear, 802 Small gear, 803 Rotating shaft, 804 Motor, 9 Discharge pipe, 901 Valve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: However, in existing equipment, the pre-calcined material needs to be thoroughly dried and oxidized during the production of permanent magnet ferrite to improve the production quality. Traditional preparation equipment does not achieve ideal drying and oxidation results, leading to poor production quality. To solve this problem, please refer to... Figures 1-4This utility model provides a technical solution: a device for preparing pre-calcined permanent magnet ferrite, including a heating chamber 1, a rotating drum 7, a suction pump 2, and a processing chamber 3. The top of the processing chamber 3 is connected to a feeding hopper 4, and the bottom of the feeding hopper 4 is fixedly connected to a feeding pipe 401, which extends into the processing chamber 3, connecting the feeding hopper 4 and the processing chamber 3. This accurately delivers the pre-calcined material into the rotating drum 7, preventing the pre-calcined material from scattering to other areas of the equipment during transport, ensuring material utilization, and preventing material contamination of internal components. The top of the processing chamber 3 is connected to an exhaust pipe 5, serving as a discharge channel for the purified gas, allowing compliant gas to exit the equipment. The exhaust pipe 5 connects to the inside of a fixing ring 6 on the right side of the processing chamber 3. Heating pipes 101 are fixedly connected to the inner wall of the heating chamber 1, which serves as the core cavity for drying and oxidizing the pre-calcined material. The heating pipes 101 are spirally distributed on the inner wall of the heating chamber 1, and the heating pipes 101 do not contact the rotating drum 7. A fixing ring 6 is fixedly connected to the side of the heating box 1 and the processing box 3 that are close to each other. The surface of the fixing ring 6 has an annular groove 601. The annular groove 601 on the inner side of the fixing ring 601 cooperates with the snap ring 702 of the rotating cylinder 7 to provide a stable rotation trajectory for the rotating cylinder 7, prevent axial displacement of the rotating cylinder 7, and ensure the stability of equipment operation. The snap ring 702 is fixedly connected to the outer side of the rotating cylinder 7, and the snap ring 702 is rotatably snapped into the annular groove 601. It carries the pre-burned material and rotates with the transmission structure, so that the pre-burned material moves continuously in the cylinder and avoids local accumulation. The cross-section of the annular groove 601 and the snap ring 702 are both T-shaped, and the fit clearance between the two is 0.1-0.3mm. The T-shaped cross-section structure, in conjunction with the snap ring 702 of the rotating cylinder 7, provides axial positioning of the rotating cylinder 7, preventing it from shifting vertically during rotation. The 0.1-0.3mm clearance reduces rotational friction, ensuring smooth rotation of the cylinder 7, while also preventing leakage of pre-burned powder, thus avoiding material waste and equipment contamination. A filter element 102, made of high-temperature resistant ceramic filter material, is installed at the connection between the heating chamber 1 and the fixing ring 6. The filter element 102 is detachable. A discharge pipe 9 is connected to the bottom of the fixing ring 6 on the left side of the heating chamber 1. A valve 901 is installed on the discharge pipe 9, allowing for flexible control of its opening and closing and the discharge speed. This prevents pre-burned material from being discharged prematurely before drying and oxidation are complete, ensuring processing quality. It also prevents leakage and blockage during discharge, improving operational convenience.

[0019] Example 2: Based on Embodiment 1, baffles 701 are fixedly connected inside the rotating cylinder 7. The baffles 701 are inclined and staggered inside the rotating cylinder 7 and are fixedly connected to the inner wall of the rotating cylinder 7. When the rotating cylinder 7 rotates, they play a role in stirring and guiding the pre-burned material, prolonging the residence time of the pre-burned material in the cylinder, and ensuring that the pre-burned material is in full contact with the hot air. At the same time, they can break the agglomeration of the pre-burned material, ensuring that each piece of pre-burned material is heated evenly, and improving the quality consistency of the pre-burned material after processing. A motor 804 is fixedly connected to the bottom of the heating box 1, providing a power source for the rotating cylinder 7. The motor drives the rotating shaft 803 to rotate through the output end, thereby driving the gear transmission structure to achieve stable rotation of the rotating cylinder 7. A rotating shaft 803 is fixedly connected to the output end of motor 804. A small gear 802 is fixedly connected to the end of rotating shaft 803 away from motor 804, and is connected to the rotating shaft 803 of motor 804. It achieves speed reduction transmission by meshing with a large gear 801, and works with the large gear 801 to adjust the speed of rotating cylinder 7, so that rotating cylinder 7 rotates slowly and stably. A large gear 801 is fixedly connected to the outside of rotating cylinder 7, and the small gear 802 meshes with the large gear 801, directly transmitting the power of gear transmission to rotating cylinder 7, driving rotating cylinder 7 to rotate synchronously, ensuring the directness and stability of power transmission.

[0020] Working principle: The pre-calcined permanent magnet ferrite material to be processed is slowly poured into the feed hopper 4. The pre-calcined material naturally slides into the rotating drum 7 through the feed pipe 401, avoiding excessive loading of the rotating drum 7 or blockage of the feed pipe 401. The motor 804 is started, driving the pinion 802 to rotate through the shaft 803. The pinion 802 meshes with the large gear 801 on the outside of the rotating drum 7, transmitting power to the rotating drum 7. The rotating drum 7 rotates stably within the annular groove 601 of the fixed ring 6 through the outer retaining ring 702. The inclined and staggered baffles 701 inside the rotating drum 7 rotate synchronously with the drum, playing a role in stirring and guiding the pre-calcined material, breaking up the agglomeration of the pre-calcined material, prolonging its residence time in the drum, and ensuring that the pre-calcined material is in full contact with the hot air in the heating chamber 1, achieving uniform drying and oxidation. External gas is extracted, heated through the heating pipe 101, purified through the filter element 102, and then discharged into the rotating drum 7. Based on sampling and testing to determine if the pre-burned material has been completely dried and oxidized, slowly open valve 901 on discharge pipe 9 and adjust the valve opening to control the discharge speed, allowing the processed pre-burned material to be smoothly discharged through discharge pipe 9 and collected into a designated container. After all the pre-burned material has been discharged, close valve 901 to prevent impurities from entering the equipment during subsequent operations.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A device for preparing pre-sintered permanent magnet ferrite, comprising a heating chamber (1), a rotating drum (7), a suction pump (2), and a processing chamber (3), characterized in that: The top of the processing box (3) is connected to the feeding hopper (4), the bottom of the feeding hopper (4) is fixedly connected to the feeding pipe (401), and the feeding pipe (401) extends into the processing box (3). The top of the processing box (3) is connected to the exhaust pipe (5), and the exhaust pipe (5) is connected to the inside of the fixing ring (6) on the right side of the processing box (3). The inner wall of the heating box (1) is fixedly connected to the heating pipe (101). The side of the heating box (1) and the processing box (3) that are close to each other is fixedly connected to the fixing ring (6). The surface of the fixing ring (6) is provided with an annular groove (601). The outer side of the rotating cylinder (7) is fixedly connected to the snap ring (702), and the snap ring (702) is rotated and snapped into the annular groove (601). A filter element (102) is provided at the connection between the heating box (1) and the fixing ring (6).

2. The apparatus for preparing pre-sintered permanent magnet ferrite according to claim 1, characterized in that: A baffle plate (701) is fixedly connected inside the rotating cylinder (7). A motor (804) is fixedly connected to the bottom of the heating box (1). A rotating shaft (803) is fixedly connected to the output end of the motor (804). A small gear (802) is fixedly connected to the end of the rotating shaft (803) away from the motor (804). A large gear (801) is fixedly connected to the outside of the rotating cylinder (7), and the small gear (802) meshes with the large gear (801).

3. The apparatus for preparing pre-sintered permanent magnet ferrite according to claim 1, characterized in that: The bottom of the fixing ring (6) on the left side of the heating box (1) is connected to the discharge pipe (9), and the discharge pipe (9) is equipped with a valve (901).

4. The apparatus for preparing pre-sintered permanent magnet ferrite according to claim 1, characterized in that: The heating tubes (101) are spirally distributed on the inner wall of the heating box (1), and the heating tubes (101) and the rotating cylinder (7) do not contact each other.

5. The apparatus for preparing pre-sintered permanent magnet ferrite according to claim 2, characterized in that: The baffles (701) are arranged in an inclined and staggered manner inside the rotating cylinder (7), and the baffles (701) are fixedly connected to the inner wall of the rotating cylinder (7).

6. The apparatus for preparing pre-sintered permanent magnet ferrite according to claim 1, characterized in that: The filter element (102) is made of high-temperature resistant ceramic filter material, and the filter element (102) is detachable and installable.

7. The apparatus for preparing pre-sintered permanent magnet ferrite according to claim 1, characterized in that: The cross-sections of the annular groove (601) and the snap ring (702) are both T-shaped, and the fit gap between them is 0.1-0.3mm.

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